Forecast Discussion

Product: Forecast Discussion Issued: 2018 Jul 31 1230 UTC Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity
.24 hr Summary… Solar activity was very low. No CMEs were observed in available coronagraph imagery.
.Forecast… Solar activity is expected to remain very low all three days (31 Jul-2 Aug).
Energetic Particle
.24 hr Summary… The greater than 2 MeV electron flux reached high levels; while the greater than 10 MeV proton flux continued at background values.
.Forecast… The greater than 2 MeV electron flux is expected to continue at moderate to high levels all three days (31 Jul-2 Aug) and the greater than 10 MeV proton flux is expected to remain at background levels.
Solar Wind
.24 hr Summary… Solar wind parameters were consistent with a nominal solar wind. Total field strength ranged from 3 to 9 nT. The Bz component underwent weak deviations. Solar wind speed ranged primarily from 275-325 km/s. The phi angle switched to a positive orientation near 31/0300Z.
.Forecast… A slow solar wind regime is expected to continue the next three days (31 Jul-2 Aug).
.24 hr Summary… The geomagnetic field was quiet.
.Forecast… The geomagnetic field is expected to remain quiet the next three days (31 Jul-2 Aug).
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